{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:57:06.551637", "data_source": "ERA5", "website": "http://wexa.jamstec.go.jp", "Author": "Patrick Martineau"}, "event_id": {"name": "Event ID", "description": "A unique identifier based on: beginning_date, end_date, longitude, and latitude", "value": "2014-Aug-30_to_2014-Sep-02_44.0_-23.0"}, "event_label": {"name": "Event label", "description": "Integer-valued grid identifier that uniquely labels each detected extreme event in space and time, consistent with the corresponding labels stored in the NetCDF dataset.", "value": 2014080001239}, "status": {"name": "Status", "description": "An ongoing event denotes an event that lasts up to the latest data available. These events are subject to change as newer data is added.", "value": false}, "start_date": {"name": "Start date", "description": "First date on which grid points are under the influence of an event", "value": "August 30 2014"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 02 2014"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "figures_available": {"name": "Figures available", "description": "True if figures were pre-generated for this event", "value": true}, "detection_var": {"name": "Detection variable", "description": "Variable used for the detection scheme", "value": "t2m"}, "event_type": {"name": "Event type", "description": "Type of the event detected", "value": "Cold spell"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 99857.22911188845}, "countries_affected": {"name": "Countries affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the countries affected by an event during its lifetime.", "value": ["Madagascar"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Madagascar"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa"]}, "oceans_affected": {"name": "Ocean basins affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the ocean basins affected by an event during its lifetime.", "value": ["Mozambique Channel"]}, "center_lat": {"name": "Center latitude", "description": "Latitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": -23.0}, "center_lon": {"name": "Center longitude", "description": "Longitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": 44.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "44.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 40.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 45.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -25.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -19.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2014-08-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[43.35, -23.25], [43.25, -23.0], [43.38, -22.7], [42.97, -22.53], [42.75, -22.0], [42.97, -21.47], [43.5, -21.25], [43.75, -21.35], [44.0, -21.25], [44.53, -21.47], [44.75, -22.0], [44.54, -22.5], [44.75, -23.0], [44.65, -23.25], [44.75, -23.5], [44.65, -23.75], [44.75, -24.0], [44.53, -24.53], [44.0, -24.75], [43.47, -24.53], [43.25, -24.0], [43.35, -23.75], [43.25, -23.5], [43.35, -23.25]]]]}, "2014-08-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.75, -20.5], [39.97, -19.97], [40.5, -19.75], [40.8, -19.87], [40.97, -19.47], [41.5, -19.25], [42.03, -19.47], [42.25, -20.0], [42.15, -20.25], [42.18, -20.32], [42.53, -20.47], [42.75, -21.0], [42.65, -21.25], [42.68, -21.32], [43.0, -21.46], [43.5, -21.25], [43.75, -21.35], [44.0, -21.25], [44.53, -21.47], [44.68, -21.82], [45.03, -21.97], [45.18, -22.32], [45.53, -22.47], [45.68, -22.82], [46.03, -22.97], [46.25, -23.5], [46.15, -23.75], [46.25, -24.0], [46.03, -24.53], [45.5, -24.75], [45.25, -24.65], [45.18, -24.68], [45.15, -24.75], [45.25, -25.0], [45.03, -25.53], [44.5, -25.75], [43.97, -25.53], [43.82, -25.18], [43.47, -25.03], [43.25, -24.5], [43.35, -24.25], [43.25, -24.0], [43.35, -23.75], [43.32, -23.68], [43.0, -23.54], [42.5, -23.75], [41.97, -23.53], [41.82, -23.18], [41.47, -23.03], [41.32, -22.68], [40.97, -22.53], [40.75, -22.0], [40.85, -21.75], [40.82, -21.68], [40.47, -21.53], [40.32, -21.18], [39.97, -21.03], [39.75, -20.5]]]]}, "2014-09-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.75, -20.5], [39.97, -19.97], [40.5, -19.75], [40.8, -19.87], [40.97, -19.47], [41.5, -19.25], [42.03, -19.47], [42.25, -20.0], [42.15, -20.25], [42.18, -20.32], [42.53, -20.47], [42.75, -21.0], [42.65, -21.25], [42.68, -21.32], [43.0, -21.46], [43.5, -21.25], [43.75, -21.35], [44.0, -21.25], [44.53, -21.47], [44.68, -21.82], [45.03, -21.97], [45.18, -22.32], [45.53, -22.47], [45.68, -22.82], [46.03, -22.97], [46.25, -23.5], [46.15, -23.75], [46.25, -24.0], [46.03, -24.53], [45.5, -24.75], [45.25, -24.65], [45.18, -24.68], 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"evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [18.37298620423263, 15.655597192418384, 15.789770250876018, 16.435542117840725]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.336739803794387, -2.4668496672023332, -2.5660024065445604, -2.0884489760114207]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.8075995690430204, -4.39607264188794, -4.1854344876863365, -3.6821653313971865]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4891635995255408, -1.8011639957697874, -1.8870218785969533, -1.5431151140041046]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7023912060219277, -2.5933945220629746, -2.620579963745755, -1.861288937844786]}}